Theoretical determination of the effects of multiple scattering by hydrometeors in monopulse systems at millimeter wavelengths

Abstract

The incoherent radiation incident on a receiving antenna after having been scattered by raindrops can cause some problems in the case of a monopulse system whose directive pattern presents a deep null toward the coherent incoming wave. This null is then filled with incoherent radiation, therefore giving rise to a degradation of the performances of the measuring equipment. In this paper this degradation is theoretically assessed assuming a simplified geometry (a rain cell embedded in stratified rain); the drops are assumed to be of spherical shape, and typical system configurations for the earth station are considered.

The challenge of using the W band in satellite communication

“…This aspect inevitably poses the problem of an accurate identification of the channel transfer function in order to highlight any possible limitation due to channel dispersion. No definite information specific for the application envisaged in this work is available in the open literature, but according to the authors' experience , non‐marginal impact on the channel dispersion at such high frequency and large bandwidth could be expected because of the multiple scattering effects occurring during rain.…”